Prokaryotes Probably First Added Significant Quantities of Oxygen into the Atmosphere

question 220

Multiple Choice

Prokaryotes probably first added significant quantities of oxygen into the atmosphere when they

• A) used carbon dioxide as the source for ions in photosynthesis.
• B) used water as the source for ions in photosynthesis.
• C) metabolized hydrogen peroxide.
• D) metabolized sulfur dioxide.
• E) became endosymbionts within eukaryotic cells.

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Definitions:

Excess Toner

Surplus toner powder that is not fused onto the paper during the printing process and must be properly cleaned out.

NTFS Permissions

A feature of the NTFS file system used in Windows Operating Systems that allows the setting of detailed access controls and permissions on files and folders.

Share Permissions

Access rights given to users or groups over a network to determine who can access folders and files, and what actions they can perform with them.

Effective Permissions

The final permissions granted for a particular resource. Folder permissions are cumulative—the combination of the group and the person’s permissions. The deny permission overrides any allowed permission set for a user or a group. When NTFS and shared folder permissions are both used, the more restrictive of the two becomes the effective permissions.